Gauge



May 29, 1956 J. REEF 2,747,288

GAUGE Filed April zo, 1955 v l l l l lil/@M72 00a/QQ@ United States Patent O GAUGE Jan Reef, East Detroit, Mich.

Application April 20, 1953, Serial No. 349,718

4 Claims. .(Cl. 33-163) This invention relates to improvements in gauges.

It relates particularly to that type of gauge which is termed a go, no go" gauge. The frame of the gauge is generally U-shaped and the ends of the arms are provided with opposed blades mounted within aligned guideways which extend transversely of the arms. The blades are adjustable toward and away from each other transversely of the arms.

It is common to divide the blade in one arm into two independent sections which are relatively adjustable and to provide a cooperating arm with a blade consisting of a single section. If desired, however, both arms may be provided with blades divided into two sections. The two sections of the blade are disposed side by side for independent slidable adjustment. One blade section projects to approach nearer to the blade of the opposite arm than is the other section. 'I'his is what provides for the go no-go arrangement.

This particular invention represents an improvement upon the gauge structures shown in my earlier Patents No. 2,562,124, and No. 2,562,125 issued July 24, 1951.

An object of this invention is to provide a gauge wherein the blades may be more positively and accurately adjusted and wherein the blades are held securely at adjusted positions and wherein the gauge is adapted to serve additional functions as compared with the gauges of the earlier patents.

More particularly an object is to provide a gauge wherein the adjustable blades are held under spring tension during the adjustment so that they may be adjusted with great accuracy. Furthermore the blades are spring tensioned so that there will not be any undesirable displacement during adjustment.

An additional object is the provision in a construction of the character set forth of adjustment screw mechanism wherein the head of the screw is of a size larger than the threaded shank of the screw; for example, the threaded shank might be a size 8 screw while the head of the screw was a size screw. This provides sufcient interengagement between the head of the screw and the thread to positively actuate the thread and the threaded engagement of the shank with the frame that is secure at all times.

Another object is the embodiment of a gauge of this go no-go type of an exteriorly disposed blade which .may be employed for gauging purposes and thereby increases the utility of the gauge.

Other objects, advantages and meritorius features will more fully appear from the following specification, claims and accompanying drawings, wherein:

Fig. l is a plan view of a gauge embodying my invention;

Fig. 2 is a transverse sectional view taken online 2 2 of Fig. l;

Fig. 3 is a transverse sectional View taken on line 3-3 of Fig. 1;

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Fig. 4 is a sectional view taken on line 4--4 of Fig. 1;

Fig. 5 is a fragmentary plan of that portion of the gauge showing the externally disposed gauge blade; and

Y Fig. 6 is a sectional view taken on line 6 6 of Fig. 5.

In the drawing the gauge body is shown as of a horseshoe or U-shape and is indicated generally by the numeral 10. It has two arms which are disposed substantially within the same plane and the ends of which are oppositely disposed and each provided on one face with a guideway for a blade or blades. The guideways are disposed oppositely with respect to each other.

In the guideway of one arm is disposed a blade 12 and in the guideway of the opposite arm is disposed a blade divided in two sections indicated as 14 and 16. The two sections of the blade which are disposed within the guideway of one arm are arranged in opposition to the blade 12 in the opposite arm. These two sections 14 and 16 are independently slidably mounted within their guideway alongside of each other. The section 14 is shown as projecting further toward the blade 12 than is the section 16. In other words, the section 16 might be the go section and the section 14 the no go section.

Each of these blades or blade sections is adapted to be actuated by a screw. In Fig.y 2 blade 12 is shown as provided with a transverse kerf 18 and the head 20 of a screw the threaded shank of which is indicated as 22 is shown as received within such kerf. The threaded shank of the screw is threaded into an internally threaded bore 24 within the arm of the gauge. This bore 24 has a counter-bore 26 at its outer end within which the head 20 of the screw is received. This counter-bore opens into the guideway within which the blade is mounted. The guideway itself is indicated by the numeral 28 and it extends transversely across the arm of the gauge body.

This blade is held to its seat by two holding screws. These holding screws are similar. Each is indicated by the numeral 32. Each has a shank 30 one of which is shown in Fig. 3 which extends through an elongate slot 36 formed in the arm of the gauge. The gauge is provided with two of these elongated slots 36. Each slot 36 has a counter-bore portion 34. Each of these screws has its head 32 mounted within the provided counterbore 34 and the shank of the screw extends through the slot 36 and is threaded into an internally threaded aperture 38 of blade 12.

This screw is adapted to hold the blade at adjusted positions. Underneath the head of the screw is a washer 40 which washer is shaped to be received within the counterbore 34 underneath the head of the screw. The washer is arcuate as shown in Fig. 3, being bowed upwardly toward the head of the screw. The washer is a hardened spring steel washer and exerts a tension tending to hold the screw to urge the blade against the bottom of the guideway so as to hold it snugly against the bottom of the guideway during its adjustment.

When the blade is to be adjusted in or out or transversely of the arm, screws 32 are loosened so as to permit the screw 22 to be adjusted to move the blade transversely of the arm. The loosening of the screws 32 is such as to permit this adjustment but such screws 32 are still held by the springs 4() to hold the blade against the bottom of the guideway so that the blade will be adjusted at all times against the frictional resistance of the bottom of the guideway and will be accurately adjusted and will not be displaced accidentally.

A cover is provided in the form of a stamping of sheet metal and indicated by the numeral 42. This cover is angular shape and has one portion which covers the slotsv 36 and the heads of the screws 32 and another portion which covers the counter-bore withinwhich the head of the adjusting screw 2.0 is disposed. The cover is held down by a'screw'44 as shown in Figs. l and 2.

The two blade sections 14 and 16 are mounted within a corresponding guideway in the opposite arm. They are mounted alongside of each other. These blade sections are supported for independent slidable movement. Each blade section is provided with an adjustment screw. ln Fig.v 4 blade section i6 is shown as provided with an adjustment screw having a head 46 disposed within a kerf 48 within `the blade section. The threaded shank of this screw lis threaded into an internally threaded aperture in the arm which overlies the guideway of the blade section as has been described in connection with blade 12. The head k46 of this screw is disposed within a counter-bore 50 formed in the arm in a manner heretofore described in connection with the head 2t) of screw 22. This adjustment screw functions in the same way as the screw 22. Upon adjustment of the screw 46 the blade section i6 is moved in and out.

The blade section 16 is held to its seat in the guideway by holding screw 52 provided with a head 54. The face of the arm opposite the face provided with the guideway is provided with an elongate slot having a counter-bore portion 56 within which the head 54 of the screw 52 is received. Within this counter-bore portion 56 of the slot is mounted a hardened spring steel washer 58. This washer is disposed underneath the head 54 of the screw. It acts upon the screw so as to hold the blade section 16 to the bottom of its seat in the guideway. Upon loosening the screw 52 the blade section 16 may therefore be adjusted by the screw 46 as has heretofore been described in connection with the adjustment of the blade 12.

lade section 14 is adjusted in a similar fashion to blade section 16. There is a kerf d which extends transversely of the blade section. There is an adjustment screw the head 62 of which is engaged within this kerf. This head 62 is disposed within a counter-bore 64 that communicates with the guideway within which the blade section is mounted. This counter-bore forms an extension of the threaded opening in the arm into which the shank of the adjustment screw is threaded. This blade section is held to its seat by a holding screw 66 the head 68 of which is seated within a counter-bore 7i) of a guideway through which the screw extends. This guideway has a Spring washer 72 disposed therein underneath the head of the screw andthe functioning is the same as hereinabove described.

A cover plate 74 held down by a screw 76 is provided. This cover plate covers the heads of the two holding screws k52 and 66. It also extends over the edge of the arm and covers the two adustment screws provided to adjust -the blade sections 14 and 16.

An external blade 7S held down by a holding screw 80 which blade is not adjustable but provides a blade gauge outside of the arms which may be used for any desired gauging purpose, such as being inserted within achannel or groove to determine whether the groove was of suicient width to receive the blade. It is shown in Figs. l and 5. The screw 30 is provided to hold the blade in position and to permit of its detachment if it is desired to remove it from the gauge.

What I claim is:

l. A gauge comprising -a generally U-shaped frame having aligned channel guideways extending transversely across one face of the frame arms adjacent to the ends thereof, each arm having a bore extending transversely thereinto from the outer edge of the frame overhanging and parallel to the guideway of the arm, each bore being counter-bored for a portion of its length -from the outer edge of the arm and `being threaded throughout the .remaining portion of its length `toward .the inner edge Vof the arm, such counter-bore opening into the guideway, a blade slidably mounted within each guideway and adjustable therethrough, said blade being exposed within the counter-bore and provided with a kerf extending transversely of the blade and opening into the counterbore, a head adjusting vscrew threaded into the threaded portion of the bore and having a head of a size larger than the size normal to the threaded portion of the screw, said head disposed rotatably within the kerf of the blade to move the blade upon the threaded adjustment of the screw, each arm having an elongate slot extending transversely thereof opening into the face opposite to the face provided with the guideway, said slot extending parallel to and superposing the guideway and opening thereinto throughout the length of the slot, said arm provided with a counter-bore encircling the slot, a headed screw extending through the slot and threaded into the blade below the slot, an elongate hardened steel spring washer seated within the slot underneath the head of the screw, said washer being convex upwardly toward the head of the screw to exert a tension tending to hold the blade against the bottom of the guideway.

2. A gauge comprising a generally U-shaped frame having aligned channel guideways extending transversely across one face of the frame arms adjacent to the ends thereof, each arm having a bore extending transversely thereinto from the outer edge of the frame overhanging and parallel to the guideway of the arm, each bore being counter-bored for a portion of its length from the outer edge of the arm and being threaded throughout the remaining portion of its length toward the inner edge of the arm, said counter-bore opening into the guideway, a blade slidably mounted within each guideway and adjustable therethrough, said blade being exposed within the counter-bore and provided with a kerf extending transversely of the blade and opening into the counterbore, a headed adjustment screw threaded into the threaded portion of the bore and with the head of the screw disposed rotatably within the kerf of the blade to move the blade lengthwise within the guideway upon threaded adjustment of the screw, each arm having an elongate slot extending transversely thereof and opening into the face of the arm opposite to the face provided with the guideway, said slot extending parallel to and superposing the guideway and opening thereinto throughout the length of the slot, said slot being surrounded by a counter-bore, a headed screw extending through the slot and threaded into the blade below the slot, the head of the screw overhanging the counter-bore above the slot, an elongate spring washer seated within the slot underneath the head of the screw, said washer being convex upwardly toward the head of the screw to exert a tension tending to hold the blade against the bottom of the guideway.

3. A gauge comprising a generally U-shaped frame having aligned channel guideways extending transversely across one face of the frame arms adjacent to the ends thereof, each arm having a bore extending transversely thereinto from the outer edge of the arm overhanging and parallel to the guideway of the arm, each bore being counter-bored for a portion of its length from the outer edge of the arm and being threaded throughout the remaining portion of its length toward the inner-edge of the arm, said counter-bore opening into the guideway, a blade slidably mounted within each guideway and adjustable therethrough, said blade being exposed within the counter-bore and provided with a kerf extending transversely-of the blade and opening into the counterbore, a headed adjusting screw-threaded into the -threaded portion of the bore and with the head of the screw disposed within the kerf of the blade to move the blade lengthwise within the guideway upon threaded adjustment of the screw, each arm having an elongate slot extending transversely thereof and opening into the face `of the arm opposite to the face provided with the guideway, said slot extending parallel and superposing the guideway and opening thereinto throughout the length of the slot, said slot being surrounded by a counter-bore, .a

headed screw extending through the slot and threaded into the blade below the slot with the head of the screw overhanging the counter-bore about the slot, an elongate convex spring washer seated within the slot underneath the head of the screw, one of the arms provided with a blade receiving seat in one face of the arm and opening through the outer edge of the arm, a blade removably mounted within said seat and projecting outwardly beyond the edge of the arm, and means removably holding said blade within the seat.

4. A gauge comprising a generally U-shaped frame having aligned channel guideways extending transversely across one face of the frame arms adjacent to the ends thereof, blade means slidably mounted within the guideway of each arm and disposed entirely within the thickness of the arm, said blade means being relatively adjustable toward and away from each other inwardly of the U-shaped frame, means for retaining said blade means at adjusted positions relative to each other, one of said arms provided with a guideway for a blade extending References Cited inthe le of this patent UNITED STATES PATENTS 1,213,134 Fellows Jan. 16, 1917 1,644,373 Hart Oct. 4, 1927 2,277,443 Livingston Mar. 24, 1942 2,511,654 Spoor June 13, 1950 2,562,124 Reef July 24, 1951 2,562,125 Reef July 24, 1951 

